Spring talking-machine motor



mm.. w, w23. mlsz E. E. TALIAFERRO SPRING4 TALKING MACHINE MTOR Filed July 8, 1920 Hfs HTmw/vfrs,

1 spring f Would beirnuch `more `satisfactory Ithanlthis plurality of'coils5 but so far it has litatenteri elia 2U, lift nir orties i iinvviinn nraiiiarnnno, or cna-Traumes, frnnivnssnn` srniiieriinnrivoauaoririvn Moron.

` To all whomz may concern.' i i *Be it known that L EnWAnn E. TALIA` ranno,` acitizenfof the `United States, residing liattanoog'a, i'n the county of flaniiltonandState of Tennessee, have invented certainnevv and useful. Improvements `in "Spring Tallnng-li/lachine Moten; `and l do hereby declare the follovvinglto be a full, clear, and exact description. of tliesaine, reference being had to the accompanying drawings, foriningpart of this specification. y i This invention relates to springrnotors andliasfor its `particular object the provision of such ainotor` foruse `with a constant speed mechanism, such for example as a talking inachine f The'obfect of tlie'present inventionis to provide a smoothly running driving' lInechanismgfor rotating the turntable of a talk` ing `machine 'or asimila-r object. e @A furtherob]ect of the invention is to provide asprinn`v `inotor *of large diameter for use with a talkinginaohine. h

Alstillfurther object of the invention ist@ provide `inechanisni so arranged that when the niain spring ofthe talking' rnachine motor breaks there .Will be no stripnino'of Gears asis nonT the custom. `l e. e

VIn the usual `forni of talking niachine the turntable is driven from the spring inotor by ineans of a `positive line oi' wears, the

niain driving gear usually being; an `integral part of the spring` motor itself and the `Worin being driven directly by the barrel "so'that the Worin is vertically `arranged in the talking machine box. This universally adopted arrangement 'precludes the use `of a large barrel for carrying the main spring since the inotor must be over theeho'rn inthe 1 cabinet typeiinachines.' rlhe disadvantage ofthe `position `of theivertically arranged springs in the usual type ofniotor1 islesy sened by providinga plurality ofcoilsv all:

cooperating togetherl in Vsuch `a manner that each of the springs tends to Wind the cas- "ing on the `next higher spring. `itfis of*V course Well-known to all7 that al single y in theboxto permit the use' of a `barrel of lar-gevdiaineterqlnithe present invention a Y damaged.

application aiefi'auiy" e, ieee. `serial ivo. esiste.

as large las the turntablev itself, so that fa single coil spring inay "be usedmThe use of 1thislarge sprin;` requires' that theA large e driving` Vgear should be` stationary and i that the coilf spring barrel should revolve. The ineanswhereby thisis carriedoutv is describedand further explained later in the speciiication at the proper place. y 'i In talkingmachine motors as at present constituted the spring necessarily has a heavy tension and since the large Lgear is an kintegral part ofthe barrel' there `is a constant pressureon the teeth `of the Worin', the drive beingdirect.` spring breaks there is a violent reaction in lWhen `the inotor a `direction opposite to thenorinal direction Vthe usual` result cfa broken spring` is a nurnber of stripped teeth.`

ln the niotor here shovvn all` danger of stripping of `teeth liasbeen `obviatedlby the provision of a safety pinion which screws on the large drive `gear in one direction fof drive but leave'sthis Wheel free to turn in the opposite or non-driving direction by virtue of its `threaded connection, so that when the heavy :impulse due to broken spring is transmitted bythe shaft to the large gear, the large gear simply nieves freely on its threads so that neitherthe teeth of the Worin, nor the teeth on their-.enter gear are lt might be remarked here that theuse of such a safety pinion in Watches Was the .niain feature which yaided `in the supplanting of the `Swiss Watches by the American inade product, but noyatternpt has so far'been inade to introduce a pinion of this nature :into a talking machine motor,

undoubtedly due tothe fact that tlieiinshowing the turntable periphery in dotted lines to indicate its relative size.

Figure 2 is acentral vertical sectiontaken through. the Winding device. f

ln the drawingspl() represents the base forined bythe top orupper Wall of the horn chamber of a talking` machine cabinet.,`

and 1l represents `the central post secured thereto by means of a nut l2 or other suitable fastening` device. The central post l1 is reduced at its upper portion to form a shaft 13 and provides a shoulder 14 between these parts. A sleeve 15 is mounted on the shaft 13 and carries at its lower end a bevel pinion 16 preferably threaded theretoas indicated at 17, and meshingiwithy a similar gear 18, secured to one end of a winding arbor 19 passing through a central bore 20 in the lower portion of the central post 11, and being ,provided as is customary with a small integral collar 21 and an adjustable washer 22 in order to correctly posit-ion the gear 18 for engagement with the driven gear 16.

, 'The central shaft 13 has a reduced threadedI end 26 providing a shoulder 27 aga-inst which the annular threaded sleeve 28 of the main gear 29 is adapted to abut duringnormal operation of the machine. At its upper portion the central shaft 13 isk provided With the usualfpin 30 which may have the reducedk guiding nipple 31 for centering and guiding` the record blank. The turntable 3,8 is of the usual type having-` a downwardly extending toothedl flange 34 fitting into a recess 35 in the turntable pulley 37 which loosely embraces the pin 30 and rests on the shoulder 88 formed on the central post, all vparts of which, aswill be nnderstood, are stationary at all times.

The barrel is loosely mounted on the sleeve 15v and is closed by a cap 41 at its lower side. The spring 42 is provided with the usual end links 43,- one of which is fastened to the button or hook 44 on the downturned integral flange 45 of the barrel,

l and the other of which is secured to thc similar hook 46 on the sleeve 15. To wind the device, a winding crank 47 is screwed into the connection 48 with the winding arbor 19 and the sleeve 15 is rotated to wind the spring through the gears 18 and 16, reverse movement of the sleeve 15 being preventedby means of the ratchet 49, as isv customary.

' A pair of spur shafts 5() are threaded into the circular upper face 51 of the barel as at 52 and are each providedat its point of connection with a: small collar 53 to support an idle pulley 54 and each of these shafts 50 also vcarries a, similar pulley 55 at its upper reducedA end, it being understood that these pulleys 54 and 55 are freely movable on the shaft 50, but that the shaft 50 itself is constrained to move with the barrel as the latter revolves.

The upper face 51 of the barrel' also supports a governing mechanism adjustably secured in brackets 61 so arranged that the governor worm 62 may be in proper mesh with the cooperating wheel 63` on the drive lshaft 64 which revolves in brackets 65and 66, the latter carrying an adjustable thrust bearing 67 to permit adjustment of the Wheel 63 with respect to the driven worm 62 on the governor shaft. The shaft 64 is provid ed centrally with a spiral thread und at thc end nearest the bracket carries a fixed drive pulley 69. An idle pulley 70 is mount ed in a yoke 71 secured to a post 72 by :i spring 73 of suflicient strength to keep taut the endless cable connection 74, this cable passing in turn from the driving pulley 69 about one of the idle pulleys 55 at the top of the shaft 50, thence to the turntable pulley 37, then about the other pulley 55 and from there to the idle pulley 70 which guides thc endless cable back to the driving pulley 69 by way of the two lower idle pulleys 54.

It will be noted that during the winding operation the only parts that move ure: the sleeve 15; the bevel gears 16 and 16, tbc lutter fast to the slcevc 15; and thc arbor, which is fast to the gear 1S. During the runningof the machine all of these parts are stationary, as is the central shaft 1.15 :ind the main gear 29; the movable parts being the barrel and the parts mounted on its upper surface 51. In case of the spring breaking the gear 29 will rise vertically on backward impulse, thereby avoiding all harm to the machine.

That 1 claim is:

1. In a spring motor device, a stationary central sha-ft, a spring coiled about said central shaft. a disc connected to said spring and movable about said cent-ral shaft, :ind mea-ns carried by said disc for transmitting rotary motion to a member revolving in a plane perpendicular to said shaft.

2. In a` spring talking machine motor, a stationary shaft, a turntable retable thereon, a coil spring concentric with said shaft, and means connecting said spring and said turntable for driving the latter.

3. In a spring motor, a central shaft, a member rotatable on said shaft, a spring surrounding said shaft, a casing for said spring and secured thereto, a stationary gear on said central shaft, a pulley on said shaft connected with said first mentioned rotatable member, and means for connecting said pulley and said gear for driving said member.

4. In a springmotor, a stationary central shaft, a sleeve on said shaft, a housing rotatable on said sleeve, a spring;r coiled about saidV sleeve and connected thereto at one end and to said housing at the other end, a, stationary gear on said first mentioned shaft, n,

pulley loosely mounted on said shaft, and

means carried by said housing operatively connecting said gear and said pulley, whereby the latter is revolved on said central shaft.

5. In a spring motor for driving a talking machine turntable,I a stationary central shaft for guiding said turntable, operative means for driving said turntable, said means including a single coil spring surrounding sain shaft and positioned parallel to said turntable.

6.111 a `talking machine, a central shaft,

a turntable rotatable about said shaft, a spring co1led about said shaft 1n a position `parallel to said turntable, and means for operatively connecting said spring and said turntable.

7. ln a talking machine, a central shaft, a member rotatably mounted on said sha'lt, a turntable also mounted on said shaft, and

driving means mounted in part on `Said ro-` loosely threaded on said intermediate section and normally resting on said shoulder.

9. In a talking machine, a turntable adapted to support a phonograph disc, a springv motor, a safety gear, mechanism connecting said motor to said turntable through said safety gear and operating to rotate the latter.

l0. In a spring motor, a support, a sta-` tionary gear carried thereby, a plurality of rotatable members coaxial therewith, and means rotatable about said support and cooperating With said gear to transmit rotary movement from one to the other of said members.

11. In a spring motor, a stationary shaft, a gear secured thereto, a spring, a member rotatable about said shaft and means including a member meshing With said gear, Jfor transmitting rotary movement from said spring to said first-mentioned member.

12. In a spring motor, a stationary gear, a spring, a rotatable driven member, means tor Winding said spring, power transmitting means connecting` said spring and said driven member, and a central shaft furnishing sole support and guide for all of said mechamsm.

13. In a spring motor, `a stationary shaft, a spring surrounding said shaft, a disk connected to one end of said spring, a member rotatable on said shaft, and means including mechanism mounted on said disk and rotatable about said shaft for transmitting mo- `member mounted coaXially with said gear,

and a Worm rotatably mounted on said member and meshing with said gear.

EDWARD E. TALlAFER-RO. 

